Question 412 of 519EasyMCQ
The fifth term of a G.P. is 2. Then the product of its first 9 terms is:
Solutions · 1
Official solution
a5=ar4=2. The product of the first 9 terms:
\[a\cdot ar\cdot ar^2\cdots ar^8=a^9r^{36}=(ar^4)^9=2^9=512.\] Answer the question to unlock